Tinkering with Firebase: Notifications

Here are quick steps/tips to integrate Firebase notifications in your client app:

• AndroidManifest :

<application>
.....
.....
    <service        android:name=".MyFirebaseMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT"/>
        </intent-filter>
    </service>
    
    <service        android:name=".MyFirebaseInstanceIdService">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
        </intent-filter>
    </service>
    
</application>

• app/build.gradle:

dependencies {
    compile 'com.google.firebase:firebase-messaging:9.0.2'}

//Make sure to apply it at the end of the file
apply plugin: 'com.google.gms.google-services'

• Project level build.gradle:

dependencies {
    classpath 'com.google.gms:google-services:3.0.0'
}

• New Classes:
• class MyFirebaseMessagingService extends FirebaseMessagingService: 
• This is where notifications rendering is handled.


• Method responsible for message handling: 



@Overridepublic void onMessageReceived(RemoteMessage remoteMessage) {}



• class MyFirebaseInstanceIdService extends FirebaseInstanceIdService


• This class is useful in getting the device token. This token is used if you want to send message to that particular device.
• This token can be collected: FirebaseInstanceId.getInstance().getToken() during app initialization.

• Firebase console:
• Go to Firebase Console to configure notifications: https://console.firebase.google.com/project/<projectId>/notification
• Configure and start send notifications !

• Side Notes:

• You app should be signed setup for using Firebase by generating and copying google-services.json under your app/ folder.
• You'll get opportunity to download google-services.json while configuring your Firebase Notifications via Firebase Console.
• New SHA can be added from Setting tabs under chosen project.